Cold-storage tank.



No. 670,955. Patented Apr. 2, 1901-.

W. J. FRANCKE.

CDLD STORAGE TANK.

(Application filed Dec. 26, 1900.) (No Model.)

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WVTLLIAM .l. FRANCKE, OF NEW BRUNSWICK, NEW JERSEY, ASSIGNOR TO THE ERUNSW'IOK REFRIGERATING COMPANY, OF SAll'lE PLACE.

CO LD-STG RAGE TANK.

SPECIFICATION forming part of Letters Patent No. 670,955, dated April 2, 1901:

Application filed December 26, 1900. Serial No. 41,042. (No model.)

To (tZZ whom it may concern.-

Be it known that 1, WILLIAM J. FRANOKE, a citizen of the United States, residing at New Brunswick, in the county of Middlesex and State of New Jersey, have invented certain new and useful Improvements in Cold-Storage Tanks, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to refrigerating apparatus, and is particularly adapted to coldstorage tanks for rooms or ice-boxes.

Heretofore rectangular tanks of uniform depth containing brine have been placed I 5 against the side walls of a room or suspended from the ceiling to store away an extra amount of refrigerating energy produced during the day while the refrigerating-machine is in operation for use during the following night. One disadvantage inherent to the use of a single tank was that it did not present enough water-surface relatively to the space it occupied, and therefore the machine was required to be operated during the night to 2 5 obtain satisfactory results. It was also found in practice that the radiating-surface from the bottom of one tank containing brine was so small that the brine did not give 06 during the night the cold stored during the day.

The object of this invention is to provide a storage system of the type aforementioned, such that the cold-producing machine can be stopped at night, and to provide a series of superposed tanks for storing brine in comparatively small space, but which will afiord a maximum of radiating-surface above and below the tanks.

Generally stated, it consists in a series of shallow tanks for containing brine, which tanks are scoop-like and deeper at one end than at the other and each one introduced between and supported by the individual members of theexpansion-coil, so that a portion of each coil is submerged into the brine and 5 another portion is exposed to the air.

The nature, characteristic features, and scope of the invention will be more readily understood from the following detailed description taken in connection with the accompanying drawings, in which- Figure 1 is a side view of an expansion-coil and a series of tapering tanks embodying features of the invention. Fig. 2 is an end view seen from the-right of Fig. 1.

Having reference to the drawings by letters, A and B are pipes, either one of which may represent the inlet or the outlet of an expansion-coil common to this class of apparatus consisting of the individual members or pipes D, superposed one above the other and whereof every two of them are united by the headers or U-couplings D As shown in Fig. 2, there are two vertical tiers of coils united by the horizontal connection E and arranged in parallelism and supported by brackets or standards F G, which may be located on the floor, or in the event the apparatus is to be suspended may be attached to the ceiling or to the side walls of a refrigerating chamber or box.

It will be observed that the expansion-coil is arranged slightly out of the horizontal or on an incline, the purpose of which arrangement will be presently described. Between each individual coil or members of each coil there is introduced at the lower end of each inclined portion a shallow open-top tank 0, which is supported by said coil and is of a general tapering formthat is to say, its sides are wedge-shaped-being deepest at its outer end, where its walls rise to about the height of a coil. Said walls are topped with a bead 0 around their upper edges to strengthen them. The tanks extend substantially the length of the coils and contain brine, and there are usually four of them, as shown, but there may be more.

In operation the expansion-coils throughout their numerous turns are exposed alternately to the brine and to the atmosphere. 9o Thence it is evident that a maximum of liquid radiation is obtained, having in the device shown four times as much of brine-surface as would be obtained from a rectangular tank having the same depth as the whole four tanks. During the night the brine gives off its stored energy, so as to keep the interior of the refrigerating box or chamber at a low temperatnre.

Having now described the nature and ob- 10o 1. An apparatus of the class described,comprising the individual inclined expansioncoils, and a tapering tank containing brine and supported by each coil, the arrangement being such that portions of the inclined supporting-coils are alternately exposed to the atmosphere and to the brine, by reason of said.

inclination, substantially as described.

2. The combination in a refrigerating apparatus, of two series of inclined expansionooils, the coils of one series being arranged one above the other at the same height as the WILLIAM J. FRANOKE.

Witnesses:

R. G. KENYON, EDWARD MoRRIs. 

